Conveyer.



J. F,- 000K.

PATENTED JULY 14, 1903 GQNVEYBR. APPLIOATIdN FILED 1 1313.18, 1902.

N0 MODEL.

2 SHEETS-SHEET 1.

No. 738,373. PATENTED JULY 14, 1903.

. .J. P. 000K.

GONVEYER.

APPLICATION FILED 1113.18, 1902.

I0 MODEL. 2 SHEETS-SHEET 2.

vzwuboz ins flttozmugd 1.

UNITED STATES Patented July 14, 1903.

PATENT OFFICE.

CONVEYER.

EJPECIFICATION forming part of Letters Patent No. 733,373, dated July 14, 1903v Application filed February 18,1902. Serial No. 94.642. (No model.)

1'0 all w/wm it may concern:

Be it known that I, JUNIUS F. COOK, a citizen of the United States, and a resident of Johannesburg, in the Transvaal Colony, South Africa, am the inventor of certain new and useful Improvements in Conveyors, of which the following is a specification.

The object of my invention is to provide a conveyer which will feed automatically predetermined quantities of material without injurious shock or jar to the mechanism.

I intend primarily to use the invention with ore-crushers of the stamp variety, though it be used for any purpose for which such constructions are adapted.

In the drawings forming partof this specification, Figure l is a side elevation of my invention, parts being broken away and other parts being shown in section. Fig. 2 is a plan view. Fig. 3 is a cross-section showing the means for operating the belt, such section being taken on the line :1; cc of Fig. 1 looking to the left. Fig. i is a detail of the belt used when material such as wet ore is fed.

E represents the framework of the machine. Mounted on this frame are drums or cylinders B B, the spindles O C of which are mounted in bearings D, carried on the frame. Around these drums passes the endless conveyor-belt A, which may be of any desired construction. In Fig. 4 I have shown a belt A, having side flanges, which is used where such substances as wet ore are carried. In order to keep the belt tight, I make one set of bearings for the spindles 0 adjustable. The adjusting means shown consists of a screw C one end passing through a threaded bearing on the frame and the other end being attached to the bearing, the whole forming an adjustable bearing of well-known character. Mounted loosely on the spindles C are levers G G. Between the outer ends of these levers is secured a wedge-block I, forming one part of a clutch. As illustrated in Fig. 1,thisblockhasthreewedge-surfaces. Fixed to the spindle 0, between the levers G G, is a friction-disk F. wed ge-block and the friction-disk F are placed balls or rolls II. The inclines are so arranged that when the levers are moved downward the balls or rolls pass freely over the friction-disk. IVhen the levers are moved In the space between the.

upward, the balls traveling on the wedge-surfaces clamp the block firmly to the frictiondisk in the manner well known in this type of clutch.

Attached to one of the levers G G is a spring L, the other end of which is attached to the fixed part of the frame.- This spring is normally compressed, as shown, its effect being to keep the levers G G in their highest position. Carried by the frame is an upright M, through a screw-threaded collar on which passes the screw N, said screw having at the upper end a hand-wheel or other device M for operating the same, the lower end of the screw bearing on one of the levers, as G, so that by moving the screw one way or the other the extent of upward movement of the levers G G is regulated.

R represents the mortar of a stamp-battery, Q the stamp proper, and Q the stampstem, all of this construction being of the ordinary type. V

Mounted loosely on the spindle O is a yokeshaped lever J, terminating in the lever-arm J, having a bifurcated end J Through this bifurcated end the stamp-stem Q, passes. Attached to the stamp-stem and above the lever is the tappet Q, so placed that when the stamp descends a certain distance the tappet will strike the bifurcated end J of the lever J. A link K connects the lever J with the levers G G, as clearly shown in Fig. 1.

Fenders T are mounted on the frame of the machine and positioned just above the belt in order to prevent the material carried from moving sidewise off the belt.

P represents the chute leading from the bin or other storage-receptacle for delivering the material to be carried on the belt.

The operation of the device is as follows: The substance to be carried is delivered through the chute P to the belt A, the thickness of the layer on the belt being predetermined by the construction and inclination of the chute. Assuming the mortar to be full of the substance to be crushed, such as ore, and the stamp to be working, there will be no feed of material until the amount of material in the mortar is reduced to such a degree that the stamp in its descent will cause the tappet Q, to strike the lever-arm J. When this occurs, the lever J will be depressed and through the medium of the link K will depress the levers G G against the force of the spring L without any motion of the belt-cylinders, for, as has been explained, the wedgeblock and the rolls can move freely in a downward direction. When the tappet is raised from ott the lever J, the spring L lifts the levers G G, the clutch binds against the friction-wheel F, and the forward roll or cylinder is moved, thus moving the belt forward and feeding a portion of the material over the front of the forward cylinder into the mortar, as is clearly evident from Fig. 1. The amount of movement of the belt is determined by the screw N, which limits the upward motion of the levers G G. In front of the belt there is arranged a scraper S,

which bears against the front of the belt, insuring the delivery of all material carried by it.

By the mechanism just described an even distribution of the ore over the full width of the opening of the mortar R is assured, so that the mortar will be evenly and properly supplied With ore, thus making the wear on the stamp parts more even.

The conveyer may be placed at varying angles, so that it may act not only as a conveyer but an elevator, and thus allow a more economical construction of the storing-bin, as will be evident to those skilled in the art.

It will be observed that the feed of the ore is governed by the depth of the material in the mortar. Consequently the amount and frequency of the feed maybe accurately regulated.

The mechanism for moving the belts is important, because it guards against the injurious shocks or jars which would result from positive operating means.

\Vhat I claim, and desire to secure by Letters Patent, is

1. In a belt conveyer, the combination of cylinders for carrying the belt, a clutch adapted to move one of said cylinders intermittently, means for positively moving the clutch in the inoperative direction, and a spring for moving said clutch in the opposite direction to actuate said cylinder, substantially as described.

2. In a belt conveyer for stamp-mills, the

combination ofcylinders forcarrying the belt, a clutch adapted to move one of said cylinders intermittently, means operated by the stamp-spindle forpositively movingtheclutch in the inoperative direction, and a spring for moving said clutch in the opposite direction to actuate said cylinder, substantially as described.

- 3. The combination of a stamp-crusher, a belt conveyer, a clutch for operating said conveyer intermittently, a lever and connections for moving the clutch in the inoperative direction, a tappet on the stamp-spindle for actuating said lever, and a spring for retracting the parts to move the clutch in the operative direction, substantially as described.

In testimony whereof I have hereunto set my hand, at Johannesburg, in the Transvaal Colony, South Africa, this 17th day of January, 1902.

JUNIUS F. COOK.

Witnesses:

W. H. HAIG, GEORGE H. HILLARY. 

